45158397 has 4 divisors (see below), whose sum is σ = 60211200. Its totient is φ = 30105596.

The previous prime is 45158371. The next prime is 45158411. The reversal of 45158397 is 79385154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45158397 - 2¹⁰ = 45157373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45158357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7526397 + ... + 7526402.

It is an arithmetic number, because the mean of its divisors is an integer number (15052800).

Almost surely, 2^45158397 is an apocalyptic number.

It is an amenable number.

45158397 is a deficient number, since it is larger than the sum of its proper divisors (15052803).

45158397 is a wasteful number, since it uses less digits than its factorization.

45158397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15052802.

The product of its digits is 151200, while the sum is 42.

The square root of 45158397 is about 6719.9997767857. Note that the first 3 decimals coincide. The cubic root of 45158397 is about 356.1061759849.

The spelling of 45158397 in words is "forty-five million, one hundred fifty-eight thousand, three hundred ninety-seven".